First on-sky tests of LQG control for a 10m-class telescope: prelude on the Gran Telescopio Canarias adaptive optics system

Lucas Marquis; Henri-François Raynaud; Nicolas Galland; José Marco de La Rosa; Icíar Montilla; Óscar Tubío Araújo; Marcos Reyes García-Talavera; Gianluca Lombardi; Manuel Huertas Lopez; Daniel Reverte; Caroline Kulcsár

doi:10.1117/12.3020099

27 August 2024 First on-sky tests of LQG control for a 10m-class telescope: prelude on the Gran Telescopio Canarias adaptive optics system

Lucas Marquis, Henri-François Raynaud, Nicolas Galland, José Marco de La Rosa, Icíar Montilla, Óscar Tubío Araújo, Marcos Reyes García-Talavera, Gianluca Lombardi, Manuel Huertas Lopez, Daniel Reverte, Caroline Kulcsár

Author Affiliations +

Proceedings Volume 13097, Adaptive Optics Systems IX; 130977Y (2024) https://doi.org/10.1117/12.3020099
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

The Gran Telescopio Canarias (GTC) is being equipped with an Adaptive Optics (AO) system, developed by the Instituto de Astrofísica de Canarias (IAC). The Institut d’Optique Graduate School-Laboratoire Charles Fabry (IOGS-LCF), through a collaboration with the IAC, integrated some high performance control solutions. In this proceeding, we present the first and promising on-sky results on a 10-meter class telescope for such a controller, namely a full Linear Quadratic Gaussian regulator (LQG). We start with a brief description of the GTCAO system, including the data-driven LQG regulator construction. Performance results are then presented with a full LQG regulator in line with the previous on-bench experiments, implemented in DARC, the GTCAO RTC. A comparison is performed with the integrator, the baseline controller, through the comparison of point spread functions acquired on the scientific camera and residual slopes recorded by the wavefront sensor.

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Lucas Marquis, Henri-François Raynaud, Nicolas Galland, José Marco de La Rosa, Icíar Montilla, Óscar Tubío Araújo, Marcos Reyes García-Talavera, Gianluca Lombardi, Manuel Huertas Lopez, Daniel Reverte, and Caroline Kulcsár "First on-sky tests of LQG control for a 10m-class telescope: prelude on the Gran Telescopio Canarias adaptive optics system", Proc. SPIE 13097, Adaptive Optics Systems IX, 130977Y (27 August 2024); https://doi.org/10.1117/12.3020099

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